A while ago, I bought a used 2wd Excursion 7.3l diesel. It has 186k miles on it and has been a great ride. Had to do some normal maintenance to it but no real issues.

Here is what I am asking about: About 3 weeks ago, I was driving the thing, I came to a stop sign, turned right, went to accelerate (1/3 throttle) and the thing starts to act like it was running on 4 cylinders. Shaking and way down on power, No smoke that I could tell, and when I rolled down the window, I could not hear the turbo at all even at WOT. It could barely maintain 55mph. I kinda thought blown trubo, I will limp it home and look into it. I went on for about 2 miles, and the situation got worse, until the motor quit altogether.

Here is the weird part, I hit the key to start it, nothing happens(duh, I was still in Drive) shifted into N hit the key, the thing starts right up. Drove it home no problems. Been driving it for 3 weeks not a skip, belch, fart, nothing but normal driving.

However, Since it stalled, it is slightly down on power, and the thing shifts MUCH better. It acts like it HAD a program/chip in it and now it doesn't.

Where I bought the thing from claimed there was no chip in the thing, but I had a 2000 SD with a PS and I had a programmer in it, so I know the difference. and this thing acted just like my SD did when it was programmed. I took it to ford just after I got it (before this happened) and they had it on the computer and said nothing about it being programmed.

Im happy with it the way its running, but I am a bit worried about reliability.

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